The Collaborative International Dictionary of English. 2000.
forestaff — /fawr staf , stahf , fohr /, n., pl. forestaves, forestaffs. cross staff. [1660 70; FORE + STAFF1] * * * … Universalium
forestaff — ˈ ̷ ̷ˌ ̷ ̷ noun Etymology: fore + staff : cross staff 2 * * * /fawr staf , stahf , fohr /, n., pl. forestaves, forestaffs. cross staff. [1660 70; FORE + STAFF1] … Useful english dictionary
cross-staff — Forestaff Fore staff , n. (Naut.) An instrument formerly used at sea for taking the altitudes of heavenly bodies, now superseded by the sextant; called also {cross staff}. Brande & C. [1913 Webster] … The Collaborative International Dictionary of English
Radiometer — Ra di*om e*ter (r[=a] d[i^]*[o^]m [ e]*t[ e]r), n. [L. radius radius + meter: cf. F. radiom[ e]tre.] 1. (Naut.) A forestaff. [1913 Webster] 2. (Physics) An instrument designed for measuring the mechanical effect of radiant energy. [1913 Webster]… … The Collaborative International Dictionary of English
cross-staff — /kraws staf , stahf , kros /, n., pl. cross staffs, cross staves. Astron. an instrument for measuring the angle of elevation of heavenly bodies, consisting of a calibrated staff with another shorter staff perpendicular to and sliding on it. Also… … Universalium
