[7] kalreip (n.) ‘tack’: A rope attached to a sail to control its shape (to prevent it from shaking out the wind). The first element of the cpd is derived from the weak verb kala ‘lose the wind’ (cf. ModIcel. kelr seglið ‘the sail loses the wind’), and the second element is reip n. ‘rope’. For the Modern English nautical term ‘tack’, see OED: tack, n.1, II., 5.a. The heiti is known only from the present þula (Falk 1912, 66-7). See also sikulgjǫrð ‘rope’ (st. 5/6).